At certain times, the openni launch doesn't recognize the device. That is, under normal circumstances there is: "Device "1d27/0601@2/4" with serial number "1206070219" connected". This doesn't show up at certain times. DMESG output when this happens is:
[ 2337.622523] 3:2:1: usb_set_interface failed (-110)
[ 2342.624647] 3:2:1: usb_set_interface failed (-110)
[ 2347.626761] 3:2:1: usb_set_interface failed (-110)
[ 2352.628837] 3:2:1: usb_set_interface failed (-110)
[ 2357.630951] 3:2:1: usb_set_interface failed (-110)
[ 2362.633276] 3:2:1: usb_set_interface failed (-110)
[ 2367.635383] 3:2:1: usb_set_interface failed (-110)
[ 2372.645469] 3:2:1: usb_set_interface failed (-110)
[ 2377.647565] 3:2:1: usb_set_interface failed (-110)
[ 2382.649661] 3:2:1: usb_set_interface failed (-110)
[ 2387.651737] 3:2:1: usb_set_interface failed (-110)
So many such lines.
After unplugging and re-plugging the USB cable, and restarting the openni launch, everything works fine.
At certain times, the openni launch doesn't recognize the device. That is, under normal circumstances there is: "Device "1d27/0601@2/4" with serial number "1206070219" connected". This doesn't show up at certain times. DMESG output when this happens is: [ 2337.622523] 3:2:1: usb_set_interface failed (-110) [ 2342.624647] 3:2:1: usb_set_interface failed (-110) [ 2347.626761] 3:2:1: usb_set_interface failed (-110) [ 2352.628837] 3:2:1: usb_set_interface failed (-110) [ 2357.630951] 3:2:1: usb_set_interface failed (-110) [ 2362.633276] 3:2:1: usb_set_interface failed (-110) [ 2367.635383] 3:2:1: usb_set_interface failed (-110) [ 2372.645469] 3:2:1: usb_set_interface failed (-110) [ 2377.647565] 3:2:1: usb_set_interface failed (-110) [ 2382.649661] 3:2:1: usb_set_interface failed (-110) [ 2387.651737] 3:2:1: usb_set_interface failed (-110)
So many such lines.
After unplugging and re-plugging the USB cable, and restarting the openni launch, everything works fine.